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Contact Loss beneath Track Slab Caused by Deteriorated Cement Emulsified Asphalt Mortar: Dynamic Characteristics of Vehicle-Slab Track System and Prototype Experiment

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dc.contributor.authorLiu, Danen
dc.contributor.authorLiu, Yu-fengen
dc.contributor.authorRen, Juan-juanen
dc.contributor.authorYang, Rong-shanen
dc.contributor.authorLiu, Xue-yien
dc.contributor.departmentCivil and Environmental Engineeringen
dc.date.accessioned2017-09-18T09:34:14Zen
dc.date.available2017-09-18T09:34:14Zen
dc.date.issued2016-11-21en
dc.date.updated2017-09-18T09:34:14Zen
dc.description.abstractThe contact loss beneath track slab caused by deteriorated cement emulsified asphalt mortar (CA mortar) has been one of the main diseases occurring in the CRTS- (China Railway Track System-) I Slab Track of high-speed railway in China. Based on the slab track design theory and the vehicle-track coupling vibration theory, a vehicle-track vertical coupling dynamic FEM model was established to analyze the influence of the contact loss length on the dynamic characteristics of vehicle and track subsystems at different train speeds. A prototype dynamic characteristic experimental test of CRTS-I Slab Track with CA mortar contact loss was conducted to verify the FEM model results. The train load was generated by the customized ZSS50 excitation car. The results showed that when the operation speed is less than 300 km/h, the contact loss with length smaller than 2.0 m barely affects the running smoothness ride safety of vehicle. The contact loss length effect on the dynamic characteristics of track subsystem is pronounced, especially on the track slab. Once the contact loss beneath the track slab occurs, the vibration displacement and the acceleration of the track slab increase rapidly, while it has little influence on the displacement and acceleration of the concrete roadbed.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationDan Liu, Yu-feng Liu, Juan-juan Ren, Rong-shan Yang, and Xue-yi Liu, “Contact Loss beneath Track Slab Caused by Deteriorated Cement Emulsified Asphalt Mortar: Dynamic Characteristics of Vehicle-Slab Track System and Prototype Experiment,” Mathematical Problems in Engineering, vol. 2016, Article ID 3073784, 12 pages, 2016. doi:10.1155/2016/3073784en
dc.identifier.doihttps://doi.org/10.1155/2016/3073784en
dc.identifier.urihttp://hdl.handle.net/10919/78925en
dc.language.isoenen
dc.publisherHindawien
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.holderCopyright © 2016 Dan Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleContact Loss beneath Track Slab Caused by Deteriorated Cement Emulsified Asphalt Mortar: Dynamic Characteristics of Vehicle-Slab Track System and Prototype Experimenten
dc.title.serialMathematical Problems in Engineeringen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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